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| author |   Richard Strand <richard.strand@icomera.com> | 2010-02-01 12:56:28 (GMT) |
|---|---|---|
| committer | Richard Strand <richard.strand@icomera.com> | 2010-02-01 12:56:28 (GMT) |
| commit | 22fca0106eceb10e1c1666d680be29f978ec8908 (patch) | |
| tree | d970b5163f80223667b08b54dff8d8365fb9e5c8 | |
| parent | 8d01c33fd10e031bbe29779ff93403180b84971e (diff) | |
libc/eglibc: Add option to optimize for size
Add an option to eglibc to optimize for size using -Os.
Signed-off-by: Richard Strand <richard.strand@icomera.com>
| -rw-r--r-- | config/libc/eglibc.in | 7 | ||||
| -rw-r--r-- | scripts/build/libc/eglibc.sh | 8 |
2 files changed, 14 insertions, 1 deletions
diff --git a/config/libc/eglibc.in b/config/libc/eglibc.in index f37ff89..0dc6848 100644 --- a/config/libc/eglibc.in +++ b/config/libc/eglibc.in @@ -95,6 +95,13 @@ config EGLIBC_CHECKOUT Note that crosstool-NG will *not* update your working copy, you will have to do that yourself. +config EGLIBC_OPT_SIZE + bool + prompt "optimize eglibc for size (-Os)" + help + Optimize eglibc for size using -Os instead of -O2. This will make eglibc + smaller but may make it slower. + config EGLIBC_CUSTOM_CONFIG bool prompt "Use custom configuration file" diff --git a/scripts/build/libc/eglibc.sh b/scripts/build/libc/eglibc.sh index b36201c..1875a23 100644 --- a/scripts/build/libc/eglibc.sh +++ b/scripts/build/libc/eglibc.sh @@ -259,6 +259,12 @@ do_libc() { CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config fi + if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then + OPTIMIZE=-Os + else + OPTIMIZE=-O2 + fi + # Add some default glibc config options if not given by user. # We don't need to be conditional on wether the user did set different # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config @@ -301,7 +307,7 @@ do_libc() { CT_DoLog DEBUG "Extra CC args passed : '${extra_cc_args}'" BUILD_CC="${CT_BUILD}-gcc" \ - CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O2" \ + CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}" \ CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \ AR=${CT_TARGET}-ar \ RANLIB=${CT_TARGET}-ranlib \ |